v3.4.1

• ⚠️ Building for the experimental CPython 3.13 free-threading variant is now deprecated. That functionality will be removed in the next minor release. The enable option cpython-freethreading is therefore also deprecated. Builds specifying enable = "all" no longer select cpython-freethreading. CPython 3.14 free-threading support remains available without the enable flag. (#2787)
• 🐛 iOS builds will no longer skip repair-wheel-command if it's defined in config (#2761)
• 🐛 Fix bug causing uv to fail when environments define PYTHON_VERSION or UV_PYTHON, conflicting with our venvs (#2795)
• ✨ cibuildwheel prints the selected build identifiers at the start of the build. (#2785)
• 🔐 The GitHub Action now references other actions with a full SHA (#2744)

v2.23.4

• 🐛 Fix HTTP 429 errors while downloading virtualenv from GitHub blob URLs – uses a https://bootstrap.pypa.io/ URL instead. (#2775)

v3.4.0

• 🌟 You can now build wheels using uv as a build frontend. This should improve performance, especially if your project has lots of build dependencies. To use, set build-frontend to uv. (#2322)
• ⚠️ We no longer support running on Travis CI. It may continue working but we don't run tests there anymore so we can't be sure. (#2682)
• ✨ Improvements to building Rust wheels on Android (#2650)
• 🛠 Update Pyodide to 0.29.3 (#2719, #2733)
• 🐛 Fix bug with the GitHub Action on Windows, where PATH was getting unnecessarily changed, causing issues with meson builds. (#2723)
• ✨ Add support for quiet setting on build and uv from the cibuildwheel build-verbosity setting. (#2737)
• 📚 Docs updates, including guidance on using Meson on Windows (#2718)

v3.3.1

• 🛠 Update dependencies and container pins, including updating to CPython 3.14.2. (#2708)

v3.3.0

• 🐛 Fix an incompatibility with Docker v29 (#2660)
• ✨ Adds test-runtime option, to customise how tests on simulated/emulated environments are run (#2636)
• ✨ Adds support for new manylinux_2_35 images on 32-bit ARM armv7l, offering better C++20 compatibility (#2656)
• ✨ build[uv] is now supported on Android (#2587)
• ✨ You can now install extras (such as uv) with a simple option on the GitHub Action (#2630)
• ✨ {project} and {package} placeholders are now supported in repair-wheel-command (#2589)
• 🛠 The versions set with dependency-versions no longer constrain packages specified by your build-system.requires. Previously, on platforms other than Linux, the constraints in this option would remain in the environment during the build. This has been tidied up make behaviour more consistent between platforms, and to prevent version conflicts. (#2583)
• 🛠 Improve the handling of test-command on Android, enabling more options to be passed (#2590)
• 📚 Docs improvements (#2618)

v3.2.1

• 🛠 Update to CPython 3.14.0 final (#2614)
• 🐛 Fix the default MACOSX_DEPLOYMENT_TARGET on Python 3.14 (#2613)
• 📚 Docs improvements (#2617)

v3.2.0

• ✨ Adds GraalPy v25 (Python 3.12) support (#2597)
• 🛠 Update to CPython 3.14.0rc3 (#2602)
• 🛠 Adds CPython 3.14.0 prerelease support for Android, and a number of improvements to Android builds (#2568, #2591)
• 🛠 Improvements to testing on Android, passing environment markers when installing the venv, and providing more debug output when build-verbosity is set (#2575)
• ⚠️ PyPy 3.10 was moved to pypy-eol in the enable option, as it is now end-of-life. (#2521)
• 📚 Docs improvements (#2574, #2601, #2598)

v3.1.4

• ✨ Add a --clean-cache command to clean up our cache (#2489)
• 🛠 Update Python to 3.14rc2 and other patch version bumps (#2542, #2556)
• 🛠 Update Pyodide to 0.28.2 (#2562, #2558)
• 🐛 Fix resolution with pyodide-build when dependency-versions is set (#2548)
• 🐛 Set CMAKE_FIND_ROOT_PATH_MODE_PACKAGE to BOTH on Android (#2547)
• 🐛 Add patchelf dependency for platforms that can build Android wheels (#2552)
• 🐛 Ignore empty values for CIBW_ARCHS like most other environment variables (#2541)
• 💼 The color and suggest_on_error argparse options are now default in 3.14rc1+ (#2554)
• 💼 Use the virtualenv release URL instead of blob URL (should be more robust) (#2555)
• 🧪 For iOS, lowering to macos-14 is needed for now due to issues with GitHub's runner images (#2557)
• 🧪 Split out platforms iOS and Android in our tests (#2519)
• 🧪 Fix and enable doctests (#2546)
• 📚 Improve our docs on free-threading (#2549)

v3.1.3

• 🐛 Fix bug where "latest" dependencies couldn't update to pip 25.2 on Windows (#2537)
• 🧪 Use pytest-rerunfailures to improve some of our iOS/Android tests (#2527, #2539)
• 🧪 Remove some GraalPy Windows workarounds in our tests (#2501)

v3.1.2

• ⚠️ Add an error if CIBW_FREE_THREADING_SUPPORT is set; you are likely missing 3.13t wheels, please use the enable/CIBW_ENABLE (#2520)
• 🛠 riscv64 now enabled if you target that architecture, it's now supported on PyPI (#2509)
• 🛠 Add warning when using cpython-experimental-riscv64 (no longer needed) (#2526, #2528)
• 🛠 iOS versions bumped, fixing issues with 3.14 (now RC 1) (#2530)
• 🐛 Fix bug in Android running wheel from our GitHub Action (#2517)
• 🐛 Fix warning when using test-skip of "*-macosx_universal2:arm64" (#2522)
• 🐛 Fix incorrect number of wheels reported in logs, again (#2517)
• 📚 We welcome our Android platform maintainer (#2516)